Improvement in rotary motor and meter



N. PEERS. PHDTO-UTHOGRAPHER, WASHINGTON. DA C.

Wil-LMAM HAMiLToN ANnWILLIAM HAMILTON, JR., or Tono'lwlo,

CANADA. Lenen Patent No. 87,665, elated Meeeh 9,1869..

mrnovnn/IENT 'mi RQTARY ivroronnrm' METER.

The Schedule refer-:edito in these Letters Patent and parl'. of the same.

To all whom 'it m/y conce/rn:

Be it known that we, WILLIAM HAMILTON, and WILLIAM HAMILTON, Jr., of` the lcity of Toronto, in the county of York, Province lof Ontario, Dominion of Canada, have invented a new and luseful Improvement in Rotary Motors or Meters; and-we do hereby declare the following to be a full, clear, and exact de-n scxiption of the same, reference. being had to the ac companying drawings, which are made a part of this specification. 1 i 4 Our invention consists inthe construction of a ro -tary engine, in such a manner that the steam or other lluid may be introduced through the rotary piston,and its pressure equalized -upon the-different sides of the piston or rotary cam, as hereinafter described, thus dispensing with the need of a separate valve-gear, and,

further, saving an immense amount of friction, and consequent wear of the machinery, which necessarily' oc- "curs in those rotary engines where the pressure is upon one side.

In order. that those skilled in theart may be enabled l to make our improved rotary engine, we subjoin the following description, reference being had to the ac companying drawings, forming part of this specication, and in which- Figure l represents a longitudinal section of the cylinder,'divided upon the line :v-x, iig. 2, with the piston orrevolving cam complete.

Figure 2 representsa plan view of the motor, with a portion of the cylinder removed, showing part of the rotary piston'or cam. e

i Av shows 'the outer shell of the cylinder, which is close, and, when complete, and fastened together `with the other parts, A' and A, forms a hollow chest, with onntve bottom and top, and flat sides, as shown in A is the main body Vof theV cylinder or chest thus formed, and lcorresponds in.shape,inside, with the 'circular form of the rotary piston or cam, only being of a sufficiently-increased diameter overitto allow the Wings C to press outwardly,when acted upon by the steam or other motive-power, presenting an oblique surface, to eceive-the expansion of the steam, airor force or resistance of the water.,

This main body A is furnished, on its inner surface, upon sides diagonally opposite from each othertaking the pipes D as the base, orhorizontal, with abutmeuts i or segmental pieces, F,hav'ing their inner surfaces made ,slightly'concave at the centre, to correspond exactly `with the convex/ity of the rotary-piston or cam, an

the space between the point of contact with thecam on either side, to the outer ends of the segments, being murved inward, toward the a'rc of the circle, and outwl`ard, toward the, ends of the segment, as seen in fig. 2. `-`The sides A a're constructed with flat inner surfaces,i to lit smoothly upon the sides fof-the. cam or rotary pistlon.

Tllley are, upon the outer sides,supplied with induction-pipes or passages, O, to admitthe steamor fluid, and eduction-pipes or passages, P, to permit its egress at the opposite end. f

Equally distant between the two ends, Dv D", are, 'upon each Aside, two perforations, E', to admit the steam into the chambers E, as seen in fig. 2.

'l he induction and eduction-passages, being atopposite ends ofthe cylinder, are separated from each other by means of acircular partition, M, extending equally distant between the' central circular boss, L, and the outer periphery of the cylinder ACf The entry-ports E are within this partition, between it and theV boss L; the exhaust-ports E" between itV 4and the outer periphery of the cylinder A".

, The ends of the sides A are extended beyond the arc described by theueircular form of the cylinder, sufficiently to allow of a'passage, for the steam, into the chamber E, through the openings D' D", the passagesvO, and entry-ports E. f

O is the rotary piston' or cam, hung centrally upon the shaft B.-

This piston is supplied with the wings C', vfastened by a hinge or knuckle-joint, as

intnthe piston or cam seen in fig. 2, or in any other proper manner.

It is also further supplied with chambers, E, in which the steam or uid is received as it issuesthrough the entry-ports E', of which there are four.I Y

These chambers extend from side to side of the piston or cam, from a point about equally distant'from the centre andA outer periphery ofthe same, in a slight curve, to the outer edge', as shown in g. 2.

the level, K, iig. l', forming a head, to receive the steam from the entry-ports E', on the opposite sides of the cylinder.

The number of chambersmay be increased, however, or decreased, if desired, to any number capable lof producing-the same results asthe number desig nated. e

The outer ends of these chambers are lclosed by the wings O,'hinged as set forth, which, when in place, rest, with the outer edges, in the jambs c.

rI he shaft B may be supplied with the packing d, iig. l, to prevent the escape of steam or other. iluid.

The end, B', ofthe shaft rests in the socket B, and consequently needs no packing., If, however, the shaft extends through and through, packing may be used upon this end as well as the other, in'the ordinary. d 'mannen The rotary piston or cam O being in position within the cylinder, place the' outer-side shells A upon the. sidesA, resting upon the body A", and fastenallsecurely together, in the usual way.

New, in order to understand the workings and utility of my invention, suppose the steam to be admitted at E, gs; 1 and2. It strikes against the solid partition A, and'is driven around it to either side, entering the Y 'lhey` are four in number, but may be divided by a i partition, placed transversely through their centre, on

chamber at D', passing in the directi'n of the arrows a a, and enters the four chambers E by the four entryports E', upon opposite sides of the cam, at the same',4

moment.

The expansion of the steam and centrifugal force open the wings O', throwing the outer edge against the inner surface of the cylinder. p

These wings are kept from flying open wide enough to bend or cause friction, by the shoulders c", fig. 2.

As the steam expands, the cam is naturally forced in the direction in which there is least resistance, which is in the. direction shown by the4 arrow c, iig. 2.

As the cam moves, the space to belled by the expanding steam increases until at last the chambers receiving the steam arrive opposite the eduction or exhaust-ports E". i

The steam now escapes through them and the passages P and D", fig. 2, in the direction of the arrows d, and the wing, in passing the segmental piece or abutment'F, is closed into its proper place once more, in

readinessto receive the next influx of steam as soon ,as it comes opposite the entry-ports E'.

It will be noticed, that by the arrangement of our engine, the steam or other uid is introduced through the rotary piston upon opposite sides of the shaft at the Sametime,A thus avoiding the necessity of a separate appliance to open the valves, balancing the engine, equalizing the pressure, saving lateral strain, and attendant friction.

' When there are fourchambers upon each side of the piston, as shown in the drawings, for the rec'eption of steam, two are filled with steam at the same time, and two are exhausted simultaneously with each other.-

By this means, a uniform motion is obtained, and also great speed, when it is used as a motor, by reason of the direct application of the steam upon opposite sides, but acting in a like direction, as before stated.

When used as a motor, propelled by compressed or hot air or water, the action is similar to that when driven by steam; and, when used for a meter, the motion may be imparted through the medium of the shaft,

or by the duid to be measured` Having thus described our improvement, y

What we claim asvnew, and of our invention, and for which we desire to secure Letters Patent, is-

1. The rotary piston O, provided with chambers E E E E, in combination with the ports E E' E", abutments F F, and valves O' O O' C', substantially as hereinset forth.

2` The-construction of the sides A with the ingresspassages O and egress-passages P, as herein set forth.

3. The arrangement of the body A", the sides A', and the outer sides A, as described.

4. In combination with the rotary piston or cam O O', the sides'A A O P, body A D D' D, the segmental pieces or abutments F l?, the entry-ports E' E',

and exhaust-ports E E, all constructed and arrangedv substantially as set forth.

5. The arrangement, relatively to the piston O O E K, of the passages D D' O O and D D P P, the induction-ports E E' E' E', eduction-ports E E" E E, andabutments F F, substantially as set forth.

` To the above specification of ou1 improvement in rotaryengines, we have signed our hands, this 16th day of December, 1868.

WILLIAM HAMILTON. WILLIAM HAMILTON, JR. Witnesses:

vWILLIAM OWEN,

GEORGE F. Dow. 

